Internal-combustion engine.



K. STEINBEGKER.

' INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAR. 13, 1912.

1,086,791. Patented'Feb.10,1914.

lnyentori Karl StelnbecKer fizz-62k- 4 WWW Witnesses:

COLUMBIA PLAN c,

UNITED STATEQEigIENT onrron.

KARL STEINBECKER, OF CHARLOTTENBURG, GERMANY, .ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

rivrn man-coiymnsr on ENGINE.

Specification of Letters latent.

Patented Feb. 10, 19141.

Application filed gMarch 13, 1912. Serial No. 683,501.

To all "whom it may concern:

Be it known that I, KARL STEINBECKER, a subject of the King of Prussia, residing at Charlottenburg, Germany, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines, and its object is to improve their construction. To this end I )rovide a common casing for the working cy inder or cylinders and the cylinder of the scavenging air pump, whereby the construction and operation may be simplified. The casing surrounds these cylinders for either their whole length or only for a portion thereof, as may be desired. The scavenging air pump delivers the air into the casing, from which it readily finds its way into the working cylinder or cylinders through ports which are opened by the movement of a piston in each of said cylinders.

The invention is especially designed for use in connection with multi-cylinder engines having oppositely moving pistons in each cylinder that control the admission and exhaust ports, and will be so described and illustrated, though it is not necessarily restricted to this particular application.

The accompanying drawing is a crosssection of the working and air pump cylin ders of a two cylinder engine, provided with my improvement, the section being taken through the inlet openings of the several working cylinders and the delivery ports of the pump.

The two working cylinders 1 are located side by side, and each is provided with a plurality of inlet openings 2, preferably arranged obliquely, as shown, to give the entering air a whirling movement and thus effect a better scavenging action. Adjacent to the working cylinders is the cylinder 3 of the scavenging air pump, provided with a plurality of delivery ports 4, each controlled by an outwardly opening check valve 5.

Surrounding all three cylinders is the common casing 6 to which the cylinders are attached, either by casting them integral therewith, or otherwise. The casing is considerably larger than the cylinders, so as to leave ample space around them for the scavenging air to flow from the pump to the working cylinders. The volume of the chamber inclosing the cylinders preferably represents a multiple of the volume of a working cylinder, so that in the arrival and discharge of the scavenging air only small variations of pressure occur, and the load on the pump kept quite constant.

' It will be noticed thatthe air is delivered from the "entire periphery of the pump cylinder thereby avoiding special conduits and passages and that it is admitted to the working cylinders at points situated all around their peripheries. The speed of the air flowing from the pump to the working cylinders is so low that practically equal volumes enter the working cylinders and the quantity entering is equally divided among the several ports and the pressure variations are small. It will also be noted that all of the cylinders occupy the same vertical plane. This has the advantage of permitting direct connection of the scavenging pump piston with the main shaft of the engine, thereby avoiding mechanical complication.

The invention is applicable to horizontal as well as to vertical engines.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is

1. In an internal combustion engine, the combination of a chambered casing forming a reservoir, a scavenging pump cylinder extending into and located at one end of the casing, said pump having means for delivering air to the reservoir, working cylinders extending into said casing and located between the pump cylinder and the other end of the casing, and angularly displaced ports in the working cylinders that are in free communication with the reservoir.

2. The combination with the Working cylinders of an internal combustion engine having air inlet ports for the scavenging air, of an air pump cylinder having delivery ports, and a casing surrounding said cylinders and afiording the means of communication for the scavenging air to pass from said pump to said working cylinders.

3. The combination with the working cylinders of an internal combustion engine having inlet ports for the scavenging air, of an air pump having a plurality of delivery ports, an outwardly openingcheck valve for each port, and a casing surrounding said cylinders and pump and of suflicient dimensions to alford a chamber of large volume through which the scavenging air may flow from the pump to the working cylinders.

4c. The combination with an inclosing casing, of a scavenging air pump cylinder therein delivering air to said casing, and working cylinders also entering said casing and provided therein with a plurality of air inlet ports arranged obliquely.

5. In an internal combustion engine, the combination of a chambered casing which is relatively long and narrow, a scavenging pump cylinder which is located at one end of and extends into the casing, a ring of ports that deliver air from said cylinder to the chamber in the casing, working cylinders extending into said casing and located between the pump cylinder and the other KARL STEINBECKER.

WVitnesses HENRY HAsrnR, lVoLDnMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patente. Washington, D. G. 

